Heat sink or similar article



FIG. 1 is a perspective view of a heat sink or similar article showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 and FIG. 5 are opposite end elevational views thereof;

FIG. 4 and FIG. 6 are opposite side elevational views thereof; and

FIG. 7 is a bottom plan view thereof. 

The ornamental design disclosed for heat sink or similar article. 